614 CLXXII. CYPERACEJE. (C. B. Clarke.) [Cyperus. 



xvi. 14 (not of Nees). C. lucidulus, C. B. Clarke in Journ. Linn. Soc. xxi. 

 99, and xxv. 80 (not of Klein, except by mixture). Cyperus, Wall. Oat. 

 3321, 3367. 



Throughout moist INDIA, alt. 500-5000 ft, plentiful, from NEPAL, Wallich, 

 and ASSAM, Griffith, to CEYLON, Thwaites, and MALACCA, Griffith. DISTRIB. Trop. 

 As., Afric., and Austral. 



Glabrous. Rhizome short, horizontal, woody. Stems solitary but not distant, 

 of lf-3 ft. (small examples under a foot occur), slender for their length, triquetrous. 

 Leaves f stem, in. broad. Umbel in well-developed examples large, straggling, 

 rays 4-10 up to 9 in. with radioles of secondary umbels up to 3 in., but small 1- 

 headed examples are frequent, with all intermediate forms ; bracts as long as umbel 

 or greatly overtopping it. Spikes large, open, rhachis glabrous. Spikelets 3-16, 

 often 1 by A in., 20-fld., compressed. Glumes boat-shaped, ovate, obtuse, 7 11- 

 nerved, in fruit scarcely imbricated ; rhachilla slender, in fruit flexuose, wings oblong 

 hyaline separating. Stamens 3 ; anthers linear-oblong, muticous. Nut triquetrous, 

 obtuse ; style shorter than nut, slender ; branches linear, slender. 



Sect. 6. Rotundi. Tall or medium plants, stoloniferous or -.rhizome 

 woody. Leaves and bracts long. Ehachilla of spikelets winged. ^.Glumes 

 closely imbricated. (Sp. 48-55.) 



48. C. long-us, Linn. Sp. PI. 67 ; rhizome somewhat thick dreeping, 

 stem rather robust at top subacutely trigonous, at base oblique, or decum- 

 bent not nodosely thickened nor suddenly contracted into a^wiry rhizome, 

 spikelets shortly spicate linear-oblong 6-16-fld., nut ellipsoid ^-| length of 

 glume. Kunth Enum. ii. 60; Boeck. in Linngea, xxxvi. 279, var. a; Boiss. 

 Fl. Orient, v. 375, vars. /3, y ; C. B. Clarice in Journ. Linn. Soc. xxi. 164, 

 excl. vars. /3, y. 



QUETTA, Hamilton. MT. ABOO, G. King. DISTEIB. Westward to the Atlantic. 



Glabrous. Rhizome -^-^ in. in diam., clothed by loose ovate triangular striated 

 brown scales. Stems 1-3 ft. Leaves -f stem, | in. broad. Umbel, rays 3-10, 

 1-10 in. long. Spikelets i by ^ in., slightly compressed, greenish ferruginous or 

 chestnut-red. Glumes ovate, obtuse, hardly keeled, 5-7-nerved, back green, margins 

 narrowly scarious. Stamens 3 ; anthers linear-oblong, muticous or scarcely api- 

 culate. Wings of rhacheola elliptic, hyaline, persistent. Nut trigonous, black ; 

 style shorter than nut, branches linear shortly exsert. Var. tenuiflora, Boeck., the 

 commoner Mediterranean form is not Indian, and is scarcely included in the above 

 description. 



49. C. stenostachyus, Benih. Fl. Austral, vii. 280; tall, stolons 

 long with distant bulbous thickenings, umbel compound compact, spikelets 

 densely spicate suberect (otherwise nearly as C. longus). Australia. 



Stolons long, ^ i n . j n diam. Stems 2 ft.,' triquetrous, at base erect somewhat 

 bulbose. Lowest bract 12-16 in., as though a continuation of stem. This might be 

 esteemed a var. of C. longus (as by Boeckeler), which has the stem at base decum- 

 bent, passing into the root without a bulbose thickening, and the spikelets rectangular 

 spreading. 



Var. /3 indica ; lowest bract suberect very long, spikelets ferruginous brown. C. 

 longus, Linn., var. gracilis, Boeck. in Linncea, xxxvi. 281. C. denudatus, Heyne, in 

 Wall. Cat. 3349, 3329, F. DECCAN PENINSULA, Wallich. 



50. C. rotundus, Linn. Sp. PL 67 (not Linn. Herb.) ; stem at base 

 nodosely thickened suddenly constricted into a wiry rhizome (otherwise 

 nearly as C. longus). Roxb. Hort. Beng. 5, and Fl. Ind. i. 197 : Kunth 

 Enum. ii. 58 (excl. C. bulbosus, Vahl, and others) ; Boeck. in Linnsea, xxxvi. 



